The world of high-end gaming PCs often presents a choice between the convenience of a pre-built and the custom-tuned power of a DIY rig. HP’s Omen 45L challenges this dichotomy, offering a meticulously engineered machine that aims to deliver bespoke performance straight out of the box. Its unique design isn’t just for show; it’s a statement about a new approach to cooling and power.
The first thing you notice about the Omen 45L is its imposing stature and the distinctive “Cryo Chamber” perched on top. This isn’t just an aesthetic flourish; it’s the desktop’s defining feature. By housing the 360mm all-in-one liquid cooler’s radiator in this separate compartment, it draws cool, ambient air directly from outside the case to cool the CPU, rather than using air already warmed by the GPU and other internal components. This elegant solution results in impressively low CPU temperatures, even when pushing a top-tier chip like the Intel Core i9-14900K through demanding workloads. The chassis itself is a triumph of function and form, featuring tempered glass panels on the front and side that are easily removed without tools, granting instant access to the cleanly managed interior.

Inside, our review unit packed an NVIDIA GeForce RTX 4080 Super, which, paired with the i9 CPU and 32GB of DDR5 RAM, delivers the commanding performance you’d expect from a flagship machine. Gaming at 1440p is an effortless exercise, with modern AAA titles running at ultra settings with triple-digit frame rates. It’s a true 4K gaming powerhouse, capably handling demanding games with ray tracing enabled, often maintaining a smooth 60+ FPS. Beyond gaming, this configuration shreds through video editing, 3D rendering, and complex multitasking, making it a viable workhorse for content creators who need both processing and graphical muscle.
One of the Omen 45L’s greatest strengths is its commitment to the DIY spirit within a pre-built package. HP uses standard, non-proprietary parts for the motherboard, power supply, and RAM, a welcome departure from the locked-down ecosystems of some competitors. This means future upgrades—swapping in a new GPU, adding more storage, or increasing memory—are as straightforward as in a custom-built PC. The tool-less design philosophy extends to the drive bays and side panels, making maintenance and upgrades a breeze for even novice users. The generous I/O, including front-panel USB-C, further enhances its practicality.
Of course, this level of engineering comes at a price. The Omen 45L sits firmly in the premium tier, and you are paying a premium for the design, warranty, and convenience over a self-built equivalent. The massive chassis, while excellent for airflow and accessibility, requires a significant amount of desk or floor space. And while the Cryo Chamber is effective, the system’s fans can still become quite audible when the CPU and GPU are under full, sustained load for long gaming sessions. However, for the enthusiast who wants a top-tier, intelligently cooled system without the time investment of building, the Omen 45L presents a compelling and powerful argument. It’s a beautifully designed machine that respects its owner’s desire for both peak performance today and the freedom to upgrade tomorrow.

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HP Omen 45L Gaming Desktop (2024) Quick Summary
Key Scores:
-
Value:
80% -
Design:
90% -
Performance:
93% -
Quality:
88% -
Popularity:
87%
Top Pros
- ✅ The innovative Cryo Chamber provides exceptional thermal management for the CPU.
- ✅ Tool-less chassis access and standard parts make upgrades incredibly simple.
- ✅ It delivers outstanding performance for high-refresh 1440p and 4K gaming.
- …
Key Cons
- ❌ The chassis is exceptionally large and requires significant desk space.
- ❌ A high price tag makes the overall value proposition complex.
- ❌ Fan noise can become prominent under sustained, heavy gaming loads.